Question

120-(5*x-60)=60
540+(7+x)*10=700

Answer 1

120- (5Х -60 )=60
120-5Х+60 =60
120-60+60 =  5Х
120 =5Х
Х =  24
540+(7+Х) *10 = 700
540+70+10Х = 700
540+70-700 = 10Х
-90 = 10Х
Х = -9